Countersunk
(countersunk hole in center for stainless steel screw).
For use on carpeted surfaces or easily drilled substrates eg, Concrete, Stone, Masonry, Timber, Vinyl, Rubber etc.

This design requires an 8mm (diameter) hole to be drilled into the substrate in a grid pattern, then attachment using the supplied masonry plugs. They may also be directly screwed onto softer surfaces such as timber without pre-drilling.

Note: Countersunk design TGSI’s come supplied with 316 Marine Grade stainless steel screws and plastic masonry pugs. If required we can supply templates for drilling the 8mm holes in the correct grid pattern.